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Windshield gasket sealant

Old 10-25-2018, 12:46 AM
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Join Date: Aug 2017
Posts: 76
Default Windshield gasket sealant

Have an 02 Taurus that's leaking water at the top of the windshield, and the gasket is doing this...

It'll pretty much pull out all the way around the windshield. Guess I need to take it all out, clean the edge of the windshield interface with a degreaser and nylon brush, pump a bunch of sealant in there and reinstall the gasket.

What kind of cleaner and sealant should I use for this job? Any advice appreciated.
Old 10-25-2018, 03:27 AM
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Join Date: Jun 2010
Posts: 9,254

Normally the windshield is set in place with a bead of Urethane sealer all around the windshield.
Either there is an opening or water has allowed rust to create an opening in the gasket surface (roof) . Sounds like you know what to do.
It might be a good idea to check with your local auto supply store to see what they have available. There are a few choices and you can choose which one according to how involved you want to get.
Old 10-25-2018, 11:30 AM
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Join Date: Jul 2006
Posts: 6,310

The rubber trim is bonded to the glass leading edge (sealing bead behind it) and its job is to just fill in the pinch weld area gap to the glass. It doesn’t have much of a sealing property or than to direct water away, and visual..
Like the old aluminum/stainless trim was designed to do only as an overlay.
If this was a replacement glass, probably more of a chance for a leaker.
Shy of removing the glass, generally what’s used is black Butyl windshield sealer, it has great stitchion, stays flexible and pliable.
It was used for years back in the day under glass that had moldings against the glass, as well as under and to fill potential gaps for full rubber windshield seals as a minor sealing aid. It doesn’t cure, so it’s not used in modern glass panel installs
Its messy stuff, actually most anything will be to fill in a channel or as a lip seal, so masking off/around is a good practice (more so the painted surfaces), lots of clean rags and a for sure a compatible solvent to help with clean up of residue left on the seal/paint/glass Gloves,, absolutely..
The Butyl with a narrow cut caulking gun tip works well to direct the sealer, applied to body side channel and under the glass edge if possible. I’d absolutely stay away from silicone sealers etc.
When using butyl, you can do the area just around where the leak is, if known,, and if it continues to leak, simply pry up the seal again (would take some work) and continue on around the seal/glass..


Last edited by Hayapower; 10-25-2018 at 11:57 AM.
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